Printed dictionaries and other books with definitions for Ambrosiaceae

Principal among the Ambrosiaceae is the common rag-weed (Ambrosiapelatior,
Fig. 2) which is responsible for 85% of fall hay-fever in the Eastern and Southern
States. It is spiculated and measures 15 microns in diameter. The giant rag-weed
...

The modern tendency among systematists is to consider the Compositae as
divisible into the three families Cichoriaceae, Ambrosiaceae, and Asteraceae or
Carduaceae. As a whole the up comprises about 850 genera and 24,000 species
, ...

Agenus of widely distributed coarse annual weeds, type of the family
Ambrosiaceae, chiefly American, and generally known as ragweed. A. artemisia
folia is also called Roman wormwood or hogweed. ambrosiac (am-brö'zi-ak), a.

3d Ed. of the Merriam Series. The Largest Abridgment of Webster's New International Dictionary of the English Language; 1700 Illustrations

to a family (Ambrosiaceae) of herbs, the ra family, having heads of flowers
subtended by an involucre of bracts. am-bro'si-al (-brö'zhi-āl; zi-āl), a, 1. Consistin
like ambrosia; delicious. 2. Divinely excellent or ful. -am-bro" y; adv. . am-bro'si-
an ...